﻿using System;
using System.Collections.Generic;
using System.Text;

namespace AMS.DataAccess.Filter
{
    /// <summary>
    /// 字段的过滤器基类。
    /// </summary>
    public class FilterField
    {
        /// <summary>
        /// 基类返回一个空字符串
        /// </summary>
        /// <returns></returns>
        public override string ToString()
        {
            return string.Empty;
        }
    }
}
